- James McAvoy
- Professor Charles Xavier
- Michael Fassbender
- Erik Lehnsherr/Magneto
- Jennifer Lawrence
- Raven/Mystique
- Oscar Isaac
- En Sabah Nur/Apocalypse
- Nicholas Hoult
- Hank McCoy/Beast
- Rose Byrne
- Moira Mactaggert
- Evan Peters
- Peter Maximoff/Quicksilver
- Tye Sheridan
- Scott Summers/Cyclops
- Sophie Turner
- Jean Grey
- Olivia Munn
- Psylocke
- Kodi Smit-McPhee
- Kurt Wagner/Nightcrawler
- Alexandra Shipp
- Ororo Munroe/Storm
- Lucas Till
- Alex Summers/Havok
- Josh Helman
- Col. William Stryker
- Ben Hardy
- Angel
- Lana Condor
- Jubilee
- Željko Ivanek
- Pentagon Scientist
- Ally Sheedy
- Scott's Teacher
- Bryan Singer
- Director, Producer
- Simon Kinberg
- Producer, Screenwriter
- Hutch Parker
- Producer
- Lauren Shuler Donner
- Producer
- Stan Lee
- Executive Producer
- Todd Hallowell
- Executive Producer
- Josh McLaglen
- Executive Producer
- Newton Thomas Sigel
- Cinematographer
- John Ottman
- Film Editing, Original Music
- Michael Louis Hill
- Film Editing
- Grant Major
- Production Design
- Caroline Alder
- Art Director
- Ravi Bansal
- Art Director
- David Gaucher
- Art Director
- Veronique Meunier
- Art Director
- Charlotte Rouleau
- Art Director
- Michele Laliberte
- Supervising Art Direction
- Anne Kuljian
- Set Decoration
- Eve Boulonne
- Set Decoration
- Geoffroy Gosselin
- Set Decoration
- Louise Mingenbach
- Costume Design
- Jeff Habberstad
- Stunt Coordinator
- Roger Mussenden
- Casting
